| 摘要 |
PROBLEM TO BE SOLVED: To provide a very small and inexpensive magnetism sensitive switch requiring only very small control force. SOLUTION: A movable member 2 and a coil spring 3 are arranged in a switch case 1, the coil spring 3 supports a movable member 2, and an upper end part 2c of the movable member 2 protrudes from an opening 1D of an upper face part of the switch case 1. A Hall IC 4 is arranged in the switch case 1. When the upper end part 2c is pressed, a magnet 6 fixed to the movable member 2 moves downward, and an output signal of the Hall IC 4 changes from off to on.
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